The Most Challenging Workout Katie Holmes Has Ever Done

Katie Holmes recently said she's in the best shape of her life, thanks to her role in the upcoming thriller The Doorman. But the actress and mom has long made a conscious effort to make physical activity a part of her everyday routine.

"I try to stay in shape," she told us at Westin's Global Running Day event where they announced their global collaboration with Charity Miles, a company that allows you to earn money for your charity of choice while working out.

Over the past couple years, Holmes has been dipping her toes in a whole new spectrum of workouts that challenge her body in different ways. "I don't run every day," she says. "I also do yoga, cycle, and lift weights."

Nearly six or seven months ago, she took up boxing too. "It's a really fun, empowering workout," she says.

Even though scuba diving was a surprising experience for Holmes, it was definitely worth the hard work and effort. "I did it in Cancun and then again in the Maldives," she says, adding that she's seen coral, sea turtles, stingrays, and lobsters on her excursions. "I've learned how to practice staying calm, staying present, and being grateful."